Maxprog is a mature software company. Their activation system is not fooled by generic keygens. When you download a cracked version or enter a key from a pastebin site, several things happen:
Email verification standards change constantly. Google and Microsoft update their SMTP rejection codes. A cracked version from 2022 will not work in 2025. You will end up verifying emails against obsolete protocols, making your list less accurate than before. maxprog email verifier activation key